Implied finding in patent

There is no mention of his age in the patent, and yet it must be taken as impliedly containing a finding that he was then an adult. This is so, because every patent for public or Indian lands carries with it an implied affirmation or finding of every fact made a prerequisite to its issue ... But such implications, although appropriately and generally indulged in support of titles held under the government's patents, are not regarded as otherwise having any conclusive or controlling force. They are not judgments in the sense of the rules respecting estoppel by judgment.